Prirority Queue

what it difference between queue and a prirority queue ? well i prirority queue also takes a number which is the priority of that number and it would take

class PQueue {  collection = [];  print = () => {    console.log(this.collection);  };  isEmpty = () => {    return this.collection.length === 0 ? 1 : 0;  };  enqueue = (element) => {    if (this.isEmpty()) {      this.collection.push(element);    } else {      let isAdded = false;      for (let i = 0; i < this.collection.length; i++) {        if (element[1] < this.collection[i][1]) {          this.collection.splice(i, 0, element);          isAdded = true;          break;        }      }      if (!isAdded) {        this.collection.push(element);      }    }  };
  dequeue = (element) => {    if (this.isEmpty()) {      return -1;    } else {      let value = this.collection.shift();      return value[0];    }  };  front = () => {    return this.collection[0];  };  size = () => {    return this.collection.length;  };}
let pqueue = new PQueue();pqueue.enqueue(["Tewari", 1]);pqueue.enqueue(["Gaurav", 5]);pqueue.print();console.log(pqueue.isEmpty());pqueue.enqueue(["js", 10]);pqueue.print();

[(["Tewari", 1], ["Gaurav", 5])];(0)[(["Tewari", 1], ["test", 1], ["Gaurav", 5], ["js", 10])];